31e67c23475f0e5a19c081db1023894d9348af14a2ded11ea53ad70649e088a4

Analysis

max time kernel
148s
max time network
152s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
03/08/2023, 18:17

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General

Target

5484d36faef27e1bf2ab3f65c1e1fa57_cryptolocker_JC.exe
Size

118KB
MD5

5484d36faef27e1bf2ab3f65c1e1fa57
SHA1

ca2b88bd36e490e4d10245ac79bccc289d516de5
SHA256

31e67c23475f0e5a19c081db1023894d9348af14a2ded11ea53ad70649e088a4
SHA512

84bb7f569102ac062126578a248c280868b2f7d5066fbade13666f3ceaf9bda1daf07737106bb6765e4c93122b8a970f138e8adbc7a3e40384716c6c76ad1027
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp699G/TG4dYU:AnBdOOtEvwDpj6zG

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2884	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2536	5484d36faef27e1bf2ab3f65c1e1fa57_cryptolocker_JC.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2536-53-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x0009000000012024-68.dat	upx
behavioral1/memory/2536-67-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x0009000000012024-64.dat	upx
behavioral1/memory/2884-71-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x0009000000012024-79.dat	upx
behavioral1/memory/2884-81-0x0000000000500000-0x000000000050F000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 2884	2536	5484d36faef27e1bf2ab3f65c1e1fa57_cryptolocker_JC.exe	28
PID 2536 wrote to memory of 2884	2536	5484d36faef27e1bf2ab3f65c1e1fa57_cryptolocker_JC.exe	28
PID 2536 wrote to memory of 2884	2536	5484d36faef27e1bf2ab3f65c1e1fa57_cryptolocker_JC.exe	28
PID 2536 wrote to memory of 2884	2536	5484d36faef27e1bf2ab3f65c1e1fa57_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\5484d36faef27e1bf2ab3f65c1e1fa57_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\5484d36faef27e1bf2ab3f65c1e1fa57_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
118KB

MD5
20c907e182f9685fbac49567927941c2

SHA1
bc36b34308de3a778c6cf2e9e60ca718f57ae924

SHA256
088ed9498e153fb9d9265a391517f94954c30f6a127468c7dc81d42d58c00fee

SHA512
a27c33845f5881dd999417e75751c0e643d8c460f4959b10fc36396846cd8578a46a09f60ba8724ce70113efd97d44d2cb268040e52f9d37d9a1c6122e1f4c08

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
118KB

MD5
20c907e182f9685fbac49567927941c2

SHA1
bc36b34308de3a778c6cf2e9e60ca718f57ae924

SHA256
088ed9498e153fb9d9265a391517f94954c30f6a127468c7dc81d42d58c00fee

SHA512
a27c33845f5881dd999417e75751c0e643d8c460f4959b10fc36396846cd8578a46a09f60ba8724ce70113efd97d44d2cb268040e52f9d37d9a1c6122e1f4c08

Download Submit
\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
118KB

MD5
20c907e182f9685fbac49567927941c2

SHA1
bc36b34308de3a778c6cf2e9e60ca718f57ae924

SHA256
088ed9498e153fb9d9265a391517f94954c30f6a127468c7dc81d42d58c00fee

SHA512
a27c33845f5881dd999417e75751c0e643d8c460f4959b10fc36396846cd8578a46a09f60ba8724ce70113efd97d44d2cb268040e52f9d37d9a1c6122e1f4c08

Download Submit
memory/2536-69-0x0000000001FE0000-0x0000000001FEF000-memory.dmp

Filesize
60KB

Download
memory/2536-55-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2536-67-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2536-53-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2536-56-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2536-54-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2536-80-0x0000000001FE0000-0x0000000001FEF000-memory.dmp

Filesize
60KB

Download
memory/2884-73-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2884-72-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2884-71-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2884-81-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download